Bedload sampler BLS30/BLS48

A 30kg Bed Load Sampler, deployed using a winch and designed to sample sand, silt, gravel or rock debris carried by a stream on or immediately above its bed.
A 48kg Bed Load Sampler, deployed using a winch and designed to sample sand, silt, gravel or rock debris carried by a stream on or immediately above its bed.

BLS30  
BEDLOAD SAMPLER CABLE SUSPENDED, MODEL BLS30
BLS48 BEDLOAD SAMPLER CABLE SUSPENDED. DEL BLS48